Unexplained Mysteries of time!!

You know those questions that just appear randomly in your brain?? No??? Ok, perhaps they just appear randomly in mine then. Here's a few to get you thinking:

What does an occasional table do the rest of the time?
Where does your lap go when you stand up?
If you unscrew your belly-button will your bottom fall off?
Is a tramp without legs a low - down bum?
Why is belly button fluff always blue??
Why does the word apostrophe not have one?
Why is abbreviation such a long word?